package Thread;

import java.util.concurrent.locks.Condition;
import java.util.concurrent.locks.Lock;
import java.util.concurrent.locks.ReentrantLock;

/**
 * @author VX5
 * @Title: MJC
 * @ProjectName DataStructure
 * @Description: TODO
 * @date ${DAT}10:24
 */
class ShareResource{
    private int number = 1;//A 1 B 2 C 3
    private Lock lock = new ReentrantLock();
    Condition c1 = lock.newCondition();
    Condition c2 = lock.newCondition();
    Condition c3 = lock.newCondition();
    //判断、干活、通知
    public void print5(){
        lock.lock();
        try {
            //1 b判断
            while (number != 1){
                c1.await();
            }
            //干活
            for (int i = 0; i <= 5; i++){
                System.out.println(Thread.currentThread().getName()+"\t"+i);
            }
            //通知
            number = 2;
            c2.signal();
        } catch (InterruptedException e) {
            e.printStackTrace();
        } finally {
            lock.unlock();
        }
    }
    public void print10(){
        lock.lock();
        try {
            //1 b判断
            while (number != 2){
                c2.await();
            }
            //干活
            for (int i = 0; i <= 10; i++){
                System.out.println(Thread.currentThread().getName()+"\t"+i);
            }
            //通知
            number = 3;
            c3.signal();
        } catch (InterruptedException e) {
            e.printStackTrace();
        } finally {
            lock.unlock();
        }
    }
    public void print15(){
        lock.lock();
        try {
            //1 b判断
            while (number != 3){
                c3.await();
            }
            //干活
            for (int i = 0; i <= 15; i++){
                System.out.println(Thread.currentThread().getName()+"\t"+i);
            }
            //通知
            number = 1;
            c1.signal();
        } catch (InterruptedException e) {
            e.printStackTrace();
        } finally {
            lock.unlock();
        }
    }
}

public class SyncAndReentrantLockDemo {
    public static void main(String[] args) {
        ShareResource shareData = new ShareResource();
        new Thread(() -> {
            for (int i = 1; i <= 10; i++){
                shareData.print5();
            }
        },"A").start();
        new Thread(() -> {
            for (int i = 1; i <= 10; i++){
                shareData.print10();
            }
        },"B").start();
        new Thread(() -> {
            for (int i = 1; i <= 10; i++){
                shareData.print15();
            }
        },"C").start();
    }
}
